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Table 6 Multiple regression analysis (unadjusted and adjusted) of effect of grade 1–2 pre-treatment multifidus muscle fat on pain and ODI at 2 years in each treatment group

From: Fat in the lumbar multifidus muscles - predictive value and change following disc prosthesis surgery and multidisciplinary rehabilitation in patients with chronic low back pain and degenerative disc: 2-year follow-up of a randomized trial

   Pain ODI
   B 95% CI for β p-value B 95% CI for β p-value
Rehab (n = 63 (pain)/64 (ODI)) Unadjusted -7.56 -21.56–6.45 0.29 -3.36 -10.23–3.51 0.33
  Adjusteda -5.93 -25.18–13.31 0.54 -1.49 -10.46–7.48 0.74
Surgery (n = 81 (pain)/83 (ODI)) Unadjusted 7.40 -4.93–19.73 0.24 7.35 0.40–14.29 0.04
  Adjusteda 15.36 0.92–29.79 0.04 10.39 2.50–18.28 0.01
  1. ODI Oswestry Disability Index
  2. aThe model is adjusted for age, gender, body mass index, smoking, and leisure time physical activity. In addition, the model for 2-year pain is adjusted for baseline pain, and the model for 2-year ODI is adjusted for baseline ODI